<!--
 * @Author: zi.yang
 * @Date: 2021-04-28 23:38:25
 * @LastEditors: zi.yang
 * @LastEditTime: 2021-04-29 15:44:40
 * @Description: In User Settings Edit
 * @FilePath: \take-out-food\src\components\star\index.vue
-->
<template>
  <div class="star" :class="starType">
    <span
      v-for="(itemClass, index) in itemClasses"
      :class="itemClass"
      class="star-item"
      :key="index"
    ></span>
  </div>
</template>

<script>
const LENGTH = 5;
const CLS_ON = 'on';
const CLS_HALF = 'half';
const CLS_OFF = 'off';
export default {
  name: 'Star',
  props: {
    size: {
      type: Number,
    },
    score: {
      type: Number,
    },
  },
  computed: {
    starType() {
      return 'star-' + this.size;
    },
    itemClasses() {
      let result = [];
      let score = Math.floor(this.score * 2) / 2;
      let hasDecimal = score % 1 !== 0;
      let integer = Math.floor(score);
      for (let i = 0; i < integer; i++) {
        result.push(CLS_ON);
      }
      if (hasDecimal) {
        result.push(CLS_HALF);
      }
      while (result.length < LENGTH) {
        result.push(CLS_OFF);
      }
      return result;
    },
  },
};
</script>

<style lang="stylus" scoped>
@import '~@styles/mixin.styl';
.star
  font-size 0
  .star-item
    display inline-block
    background-repeat no-repeat
  &.star-48
    .star-item
      width 20px
      height 20px
      margin-right 22px
      background-size 20px 20px
      &:last-child
        margin-right 0
      &.on
        bg-image('~@images/star/star48_on')
      &.half
        bg-image('~@images/star/star48_half')
      &.off
        bg-image('~@images/star/star48_off')
  &.star-36
      .star-item
        width 15px
        height 15px
        margin-right 16px
        background-size 15px 15px
        &:last-child
          margin-right 0
        &.on
          bg-image('~@images/star/star36_on')
        &.half
          bg-image('~@images/star/star36_half')
        &.off
          bg-image('~@images/star/star36_off')
  &.star-24
      .star-item
        width 10px
        height 10px
        margin-right 3px
        background-size 10px 10px
        &:last-child
          margin-right 0
        &.on
          bg-image('~@images/star/star24_on')
        &.half
          bg-image('~@images/star/star24_half')
        &.off
          bg-image('~@images/star/star24_off')
</style>
